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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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dd3496c830
Split plugin into features including dynamic types which can be indiviually registered during a static build. More details here: https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199 https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/876>
405 lines
13 KiB
C
405 lines
13 KiB
C
/* GStreamer
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* Copyright (C) <2019> Eric Marks <bigmarkslp@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-cacatv
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* @see_also: #GstCacaSink
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*
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* Transforms video into color ascii art.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch-1.0 videotestsrc ! cacatv ! videoconvert ! autovideosink
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* ]| This pipeline shows the effect of cacatv on a test stream.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstcacasink.h"
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#include "gstcacatv.h"
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/* cacatv signals and args */
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enum
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{
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LAST_SIGNAL
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};
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#define GST_CACA_DEFAULT_FONT 0
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#define GST_CACA_DEFAULT_SCREEN_WIDTH 80
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#define GST_CACA_DEFAULT_SCREEN_HEIGHT 24
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#define GST_CACA_DEFAULT_DITHER CACA_DITHERING_NONE
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#define GST_CACA_DEFAULT_ANTIALIASING FALSE
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enum
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{
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PROP_0,
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PROP_CANVAS_WIDTH,
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PROP_CANVAS_HEIGHT,
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PROP_FONT,
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PROP_DITHER,
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PROP_ANTIALIASING
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};
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
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("{ RGB, BGR, RGBx, xRGB, BGRx, xBGR, RGBA, RGB16, RGB15 }"))
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);
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ ARGB }"))
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);
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static GstFlowReturn
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gst_cacatv_transform_frame (GstVideoFilter * vfilter, GstVideoFrame * in_frame,
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GstVideoFrame * out_frame)
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{
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GstCACATv *cacatv = GST_CACATV (vfilter);
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GST_OBJECT_LOCK (cacatv);
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caca_clear_canvas (cacatv->canvas);
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caca_dither_bitmap (cacatv->canvas, 0, 0,
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caca_get_canvas_width (cacatv->canvas),
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caca_get_canvas_height (cacatv->canvas), cacatv->dither,
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GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0));
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/* libcaca always renders ARGB */
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caca_render_canvas (cacatv->canvas, cacatv->font,
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GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0), cacatv->src_width,
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cacatv->src_height, 4 * cacatv->src_width);
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GST_OBJECT_UNLOCK (cacatv);
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return GST_FLOW_OK;
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}
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static void gst_cacatv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_cacatv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define gst_cacatv_parent_class parent_class
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G_DEFINE_TYPE (GstCACATv, gst_cacatv, GST_TYPE_VIDEO_FILTER);
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GST_ELEMENT_REGISTER_DEFINE (cacatv, "cacatv", GST_RANK_NONE, GST_TYPE_CACATV);
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#define GST_TYPE_CACADITHER (gst_cacatv_dither_get_type())
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static GType
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gst_cacatv_dither_get_type (void)
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{
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static GType dither_type = 0;
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static const GEnumValue dither_types[] = {
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{CACA_DITHERING_NONE, "No dither_mode", "none"},
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{CACA_DITHERING_ORDERED2, "Ordered 2x2 Bayer dither_mode", "2x2"},
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{CACA_DITHERING_ORDERED4, "Ordered 4x4 Bayer dither_mode", "4x4"},
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{CACA_DITHERING_ORDERED8, "Ordered 8x8 Bayer dither_mode", "8x8"},
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{CACA_DITHERING_RANDOM, "Random dither_mode", "random"},
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{0, NULL, NULL},
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};
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if (!dither_type) {
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dither_type = g_enum_register_static ("GstCACATvDithering", dither_types);
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}
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return dither_type;
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}
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static gboolean
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gst_cacatv_setcaps (GstVideoFilter * filter, GstCaps * incaps,
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GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
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{
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GstCACATv *cacatv = GST_CACATV (filter);
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GstVideoInfo info;
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guint bpp, red_mask, green_mask, blue_mask, depth;
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if (!gst_video_info_from_caps (&info, incaps))
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goto caps_error;
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cacatv->sink_width = GST_VIDEO_INFO_WIDTH (&info);
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cacatv->sink_height = GST_VIDEO_INFO_HEIGHT (&info);
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switch (GST_VIDEO_INFO_FORMAT (&info)) {
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case GST_VIDEO_FORMAT_RGB:
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case GST_VIDEO_FORMAT_BGR:
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bpp = 8 * info.finfo->pixel_stride[0];
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depth = 3;
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red_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_R]);
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green_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_G]);
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blue_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_B]);
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break;
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case GST_VIDEO_FORMAT_RGBA:
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case GST_VIDEO_FORMAT_RGBx:
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case GST_VIDEO_FORMAT_xRGB:
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case GST_VIDEO_FORMAT_BGRx:
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case GST_VIDEO_FORMAT_xBGR:
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bpp = 8 * info.finfo->pixel_stride[0];
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depth = 4;
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red_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_R]);
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green_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_G]);
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blue_mask = 0xff << (8 * info.finfo->poffset[GST_VIDEO_COMP_B]);
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break;
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case GST_VIDEO_FORMAT_RGB16:
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bpp = 16;
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depth = 2;
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red_mask = 0xf800;
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green_mask = 0x07e0;
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blue_mask = 0x001f;
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break;
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case GST_VIDEO_FORMAT_RGB15:
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bpp = 16;
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depth = 2;
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red_mask = 0x7c00;
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green_mask = 0x03e0;
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blue_mask = 0x001f;
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break;
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default:
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goto invalid_format;
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}
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/* free if already exists (there is no dither resize) */
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caca_free_dither (cacatv->dither);
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cacatv->dither =
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caca_create_dither (bpp, cacatv->sink_width, cacatv->sink_height,
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depth * cacatv->sink_width, red_mask, green_mask, blue_mask, 0x00000000);
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caca_set_canvas_size (cacatv->canvas, cacatv->canvas_width,
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cacatv->canvas_height);
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return TRUE;
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/* ERRORS */
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caps_error:
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{
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GST_ERROR_OBJECT (cacatv, "error parsing caps");
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return FALSE;
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}
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invalid_format:
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{
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GST_ERROR_OBJECT (cacatv, "invalid format");
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return FALSE;
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}
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}
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/* use a custom transform_caps */
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static GstCaps *
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gst_cacatv_transform_caps (GstBaseTransform * trans, GstPadDirection direction,
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GstCaps * caps, GstCaps * filter)
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{
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GstCaps *ret;
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GstCACATv *cacatv = GST_CACATV (trans);
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GValue formats = G_VALUE_INIT;
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GValue value = G_VALUE_INIT;
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GValue src_width = G_VALUE_INIT;
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GValue src_height = G_VALUE_INIT;
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if (direction == GST_PAD_SINK) {
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ret = gst_caps_copy (caps);
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g_value_init (&src_width, G_TYPE_INT);
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g_value_init (&src_height, G_TYPE_INT);
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/* calculate output resolution from canvas size and font size */
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cacatv->src_width =
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cacatv->canvas_width * caca_get_font_width (cacatv->font);
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cacatv->src_height =
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cacatv->canvas_height * caca_get_font_height (cacatv->font);
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g_value_set_int (&src_width, cacatv->src_width);
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g_value_set_int (&src_height, cacatv->src_height);
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gst_caps_set_value (ret, "width", &src_width);
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gst_caps_set_value (ret, "height", &src_height);
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/* force ARGB output format */
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g_value_init (&formats, GST_TYPE_LIST);
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g_value_init (&value, G_TYPE_STRING);
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g_value_set_string (&value, "ARGB");
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gst_value_list_append_value (&formats, &value);
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gst_caps_set_value (ret, "format", &formats);
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} else {
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ret = gst_static_pad_template_get_caps (&sink_template);
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}
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return ret;
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}
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static void
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gst_cacatv_finalize (GObject * object)
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{
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GstCACATv *cacatv = GST_CACATV (object);
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caca_free_font (cacatv->font);
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caca_free_dither (cacatv->dither);
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caca_free_canvas (cacatv->canvas);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_cacatv_class_init (GstCACATvClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstVideoFilterClass *videofilter_class;
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GstBaseTransformClass *transform_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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videofilter_class = (GstVideoFilterClass *) klass;
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transform_class = (GstBaseTransformClass *) klass;
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gobject_class->set_property = gst_cacatv_set_property;
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gobject_class->get_property = gst_cacatv_get_property;
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gobject_class->finalize = gst_cacatv_finalize;
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CANVAS_WIDTH,
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g_param_spec_int ("canvas-width", "Canvas Width",
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"The width of the canvas in characters", 0, G_MAXINT,
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GST_CACA_DEFAULT_SCREEN_WIDTH,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CANVAS_HEIGHT,
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g_param_spec_int ("canvas-height", "Canvas Height",
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"The height of the canvas in characters", 0, G_MAXINT,
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GST_CACA_DEFAULT_SCREEN_HEIGHT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT,
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g_param_spec_int ("font", "Font", "selected libcaca font", 0, G_MAXINT,
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GST_CACA_DEFAULT_SCREEN_HEIGHT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DITHER,
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g_param_spec_enum ("dither", "Dither Type", "Set type of Dither",
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GST_TYPE_CACADITHER, GST_CACA_DEFAULT_DITHER,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ANTIALIASING,
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g_param_spec_boolean ("anti-aliasing", "Anti Aliasing",
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"Enables Anti-Aliasing", GST_CACA_DEFAULT_ANTIALIASING,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"CacaTV effect", "Filter/Effect/Video",
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"Colored ASCII art effect", "Eric Marks <bigmarkslp@gmail.com>");
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gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
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gst_element_class_add_static_pad_template (gstelement_class, &src_template);
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videofilter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gst_cacatv_transform_frame);
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videofilter_class->set_info = GST_DEBUG_FUNCPTR (gst_cacatv_setcaps);
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transform_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_cacatv_transform_caps);
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gst_type_mark_as_plugin_api (GST_TYPE_CACADITHER, 0);
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}
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static void
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gst_cacatv_init (GstCACATv * cacatv)
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{
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char const *const *fonts = caca_get_font_list ();
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cacatv->font_index = GST_CACA_DEFAULT_FONT;
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cacatv->font = caca_load_font (fonts[cacatv->font_index], 0);
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cacatv->canvas_width = GST_CACA_DEFAULT_SCREEN_WIDTH;
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cacatv->canvas_height = GST_CACA_DEFAULT_SCREEN_HEIGHT;
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cacatv->canvas =
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caca_create_canvas (cacatv->canvas_width, cacatv->canvas_height);
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cacatv->antialiasing = FALSE;
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caca_set_feature (CACA_ANTIALIASING_MIN);
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cacatv->dither_mode = 0;
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caca_set_dithering (CACA_DITHERING_NONE);
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}
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static void
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gst_cacatv_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstCACATv *cacatv = GST_CACATV (object);
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switch (prop_id) {
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case PROP_DITHER:{
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cacatv->dither_mode = g_value_get_enum (value);
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caca_set_dithering (cacatv->dither_mode + CACA_DITHERING_NONE);
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break;
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}
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case PROP_ANTIALIASING:{
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cacatv->antialiasing = g_value_get_boolean (value);
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if (cacatv->antialiasing) {
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caca_set_feature (CACA_ANTIALIASING_MAX);
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} else {
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caca_set_feature (CACA_ANTIALIASING_MIN);
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}
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break;
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}
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case PROP_CANVAS_WIDTH:{
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cacatv->canvas_width = g_value_get_int (value);
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/* recalculate output resolution based on new width */
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gst_pad_mark_reconfigure (GST_BASE_TRANSFORM_SRC_PAD (object));
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break;
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}
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case PROP_CANVAS_HEIGHT:{
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cacatv->canvas_height = g_value_get_int (value);
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/* recalculate output resolution based on new height */
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gst_pad_mark_reconfigure (GST_BASE_TRANSFORM_SRC_PAD (object));
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break;
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}
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case PROP_FONT:{
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char const *const *fonts = caca_get_font_list ();
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cacatv->font_index = g_value_get_int (value);
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caca_free_font (cacatv->font);
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cacatv->font = caca_load_font (fonts[cacatv->font_index], 0);
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/* recalculate output resolution based on new font */
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gst_pad_mark_reconfigure (GST_BASE_TRANSFORM_SRC_PAD (object));
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break;
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}
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default:
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break;
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}
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}
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static void
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gst_cacatv_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstCACATv *cacatv = GST_CACATV (object);
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switch (prop_id) {
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case PROP_CANVAS_WIDTH:{
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g_value_set_int (value, cacatv->canvas_width);
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break;
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}
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case PROP_CANVAS_HEIGHT:{
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g_value_set_int (value, cacatv->canvas_height);
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break;
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}
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case PROP_DITHER:{
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g_value_set_enum (value, cacatv->dither_mode);
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break;
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}
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case PROP_ANTIALIASING:{
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g_value_set_boolean (value, cacatv->antialiasing);
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break;
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}
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case PROP_FONT:{
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g_value_set_int (value, cacatv->font_index);
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break;
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}
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default:{
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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}
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